Parking Assist Trajectory Adaptation for Trailer Coupling Obstructions
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Solution Overview
Problem
Existing parking assist systems for vehicles with trailer couplings face limitations due to assumptions about the presence of tow-bars or trailer connections, leading to restricted parking options and inefficient maneuvers, especially when additional objects like bicycle racks are attached, which can block sensor views.
Innovation Solution
A method and system using multiple sensors (ultrasonic, camera, radar, lidar) to detect and adapt parking trajectories based on detected objects, allowing the system to dynamically adjust parking maneuvers by calculating new paths and utilizing vehicle-to-vehicle or infrastructure communication for data sharing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the parking assist system assumes a tow-bar is always present, then the system provides consistent parking guidance, but parking options are limited and additional movements are required
Solution Approach 1:
The system dynamically adapts the parking trajectory based on the detected presence or absence of objects at the trailer coupling. Sensors continuously monitor the rear region, and the control device adjusts the trajectory in real-time, switching between a first trajectory (without object) and a second trajectory (with object), thereby providing both consistency and adaptability
Solution Approach 2:
The system changes the parking trajectory parameters based on detected conditions. When no object is detected, the system uses a first trajectory with specific parameters; when an object is detected, the system calculates and uses a second trajectory with modified parameters, optimizing parking efficiency for each scenario
2Ease of operation
If the vehicle uses a standard parking trajectory without considering attached objects, then the maneuver is simpler, but the trajectory may be exceeded and parking accuracy is reduced
Solution Approach 1:
The system performs preliminary detection of objects at the trailer coupling before initiating the parking maneuver. Based on this advance information, the control device pre-calculates the appropriate trajectory, ensuring both simplicity of execution and high parking accuracy by selecting the correct trajectory before the maneuver begins
Solution Approach 2:
The system uses sensor feedback from the rear region to continuously monitor the actual vehicle position and object presence during the parking maneuver. This feedback allows the control device to adjust the trajectory in real-time, maintaining parking accuracy while keeping the maneuver simple for the driver
3Measurement precision
If multiple sensors are used to detect objects at the trailer coupling, then detection accuracy is improved, but sensor blockage becomes a potential issue
Solution Approach 1:
The system segments the detection task across multiple sensors positioned at different locations and angles around the rear region. By dividing the monitoring function among several sensors rather than relying on a single sensor, the system achieves comprehensive detection while reducing the impact of blockage on any individual sensor
Solution Approach 2:
The control device acts as an intermediary that processes data from multiple sensors and determines object presence based on combined information. When one sensor is blocked, the control device can compensate by using data from other sensors, maintaining detection accuracy while mitigating the harmful effect of sensor blockage
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the flexibility and efficiency of parking assist systems by dynamically adapting to trailer couplings with attached objects, ensuring accurate parking maneuvers without sensor blockage, and reducing the need for manual intervention.
Implementation Method 1
The first and second sensors comprise one or more of an ultrasonic sensor, a camera, a radar device, a lidar device
Implementation Method 2
The first and second sensors comprise one or more of an ultrasonic sensor, a camera, a radar device, a lidar device
Implementation Method 3
The first and second sensors comprise one or more of an ultrasonic sensor, a camera, a radar device, a lidar device
Data Source
AI summary
A method for maneuvering a vehicle having a trailer coupling in the region of a parking space is provided, wherein the vehicle has at least a first sensor and a second sensor and a control device, wherein it is detected whether an object is disposed in the region of the back of the vehicle, whether the object affects the parking behavior of the vehicle and whether the field of view of at least one sensor is blocked by the object. A vehicle for carrying out the method is further provided.